Aromatic polycarbonate resin, process for producing the same, optical-part molding material, and optical part

a technology of aromatic polycarbonate resin and production process, applied in the direction of manufacturing tools, instruments, lenses, etc., can solve the problems of poor solvent solubility, inferior moldability, and reduced transparency of molded articles
US7112644B2Inactive Publication Date: 2006-09-26IDEMITSU KOSAN CO LTD
5 Cites 66 Cited by

Patent Information

Authority / Receiving Office
US · United States
Patent Type
Patents(United States)
Current Assignee / Owner
IDEMITSU KOSAN CO LTD
Publication Date
2006-09-26
Estimated Expiration
Not applicable · inactive patent

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The present invention relates to an aromatic polycarbonate resin which comprises repetitive units originating in residual groups of a 2,2-bis(4-hydroxyphenyl)adamantane compound and a 1,3-bis(4-hydroxyphenyl)adamantane compound having a substituent on an aromatic ring and which is excellent in a transparency, a heat resistance and a mechanical strength and has a good moldability and a production process for the aromatic polycarbonate resin described above in which the adamantane compounds described above are reacted with a carbonic ester-forming compound. Further, it relates to an aromatic polycarbonate resin which is excellent in an optical characteristic and an optical part prepared by molding the same.
Need to check novelty before this filing date? Find Prior Art

Description

TECHNICAL FIELD

[0001] The present invention comprises the first invention, the second invention and the third invention, and the first invention and the second invention relate to an aromatic polycarbonate resin and a production process for the same, more specifically to an aromatic polycarbonate resin which is excellent in a transparency, a heat resistance and a mechanical strength and which has a good moldability and an effective production process for the same. The third invention relates to an optical part-molding material and an optical part, more specifically to an optical part-molding material suited to a molding material for an optical disc substrate such as a digital audio disc, a digital video disc and an optical memory disc, various lenses such as a lens for an optical pickup, spectacle lenses, contact lenses and a lens sheet, an optical sheet substrate such as a prism, a mirror, an optical fiber, a liquid crystal display and a portable key sheet and an optical functional ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More